/*! `php` grammar compiled for Highlight.js 11.9.0 */
var hljsGrammar = (function () {
  'use strict';

  /*
  Language: PHP
  Author: Victor Karamzin <Victor.Karamzin@enterra-inc.com>
  Contributors: Evgeny Stepanischev <imbolk@gmail.com>, Ivan Sagalaev <maniac@softwaremaniacs.org>
  Website: https://www.php.net
  Category: common
  */

  /**
   * @param {HLJSApi} hljs
   * @returns {LanguageDetail}
   * */
  function php(hljs) {
    const regex = hljs.regex;
    // negative look-ahead tries to avoid matching patterns that are not
    // Perl at all like $ident$, @ident@, etc.
    const NOT_PERL_ETC = /(?![A-Za-z0-9])(?![$])/;
    const IDENT_RE = regex.concat(
      /[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/,
      NOT_PERL_ETC);
    // Will not detect camelCase classes
    const PASCAL_CASE_CLASS_NAME_RE = regex.concat(
      /(\\?[A-Z][a-z0-9_\x7f-\xff]+|\\?[A-Z]+(?=[A-Z][a-z0-9_\x7f-\xff])){1,}/,
      NOT_PERL_ETC);
    const VARIABLE = {
      scope: 'variable',
      match: '\\$+' + IDENT_RE,
    };
    const PREPROCESSOR = {
      scope: 'meta',
      variants: [
        { begin: /<\?php/, relevance: 10 }, // boost for obvious PHP
        { begin: /<\?=/ },
        // less relevant per PSR-1 which says not to use short-tags
        { begin: /<\?/, relevance: 0.1 },
        { begin: /\?>/ } // end php tag
      ]
    };
    const SUBST = {
      scope: 'subst',
      variants: [
        { begin: /\$\w+/ },
        {
          begin: /\{\$/,
          end: /\}/
        }
      ]
    };
    const SINGLE_QUOTED = hljs.inherit(hljs.APOS_STRING_MODE, { illegal: null, });
    const DOUBLE_QUOTED = hljs.inherit(hljs.QUOTE_STRING_MODE, {
      illegal: null,
      contains: hljs.QUOTE_STRING_MODE.contains.concat(SUBST),
    });

    const HEREDOC = {
      begin: /<<<[ \t]*(?:(\w+)|"(\w+)")\n/,
      end: /[ \t]*(\w+)\b/,
      contains: hljs.QUOTE_STRING_MODE.contains.concat(SUBST),
      'on:begin': (m, resp) => { resp.data._beginMatch = m[1] || m[2]; },
      'on:end': (m, resp) => { if (resp.data._beginMatch !== m[1]) resp.ignoreMatch(); },
    };

    const NOWDOC = hljs.END_SAME_AS_BEGIN({
      begin: /<<<[ \t]*'(\w+)'\n/,
      end: /[ \t]*(\w+)\b/,
    });
    // list of valid whitespaces because non-breaking space might be part of a IDENT_RE
    const WHITESPACE = '[ \t\n]';
    const STRING = {
      scope: 'string',
      variants: [
        DOUBLE_QUOTED,
        SINGLE_QUOTED,
        HEREDOC,
        NOWDOC
      ]
    };
    const NUMBER = {
      scope: 'number',
      variants: [
        { begin: `\\b0[bB][01]+(?:_[01]+)*\\b` }, // Binary w/ underscore support
        { begin: `\\b0[oO][0-7]+(?:_[0-7]+)*\\b` }, // Octals w/ underscore support
        { begin: `\\b0[xX][\\da-fA-F]+(?:_[\\da-fA-F]+)*\\b` }, // Hex w/ underscore support
        // Decimals w/ underscore support, with optional fragments and scientific exponent (e) suffix.
        { begin: `(?:\\b\\d+(?:_\\d+)*(\\.(?:\\d+(?:_\\d+)*))?|\\B\\.\\d+)(?:[eE][+-]?\\d+)?` }
      ],
      relevance: 0
    };
    const LITERALS = [
      "false",
      "null",
      "true"
    ];
    const KWS = [
      // Magic constants:
      // <https://www.php.net/manual/en/language.constants.predefined.php>
      "__CLASS__",
      "__DIR__",
      "__FILE__",
      "__FUNCTION__",
      "__COMPILER_HALT_OFFSET__",
      "__LINE__",
      "__METHOD__",
      "__NAMESPACE__",
      "__TRAIT__",
      // Function that look like language construct or language construct that look like function:
      // List of keywords that may not require parenthesis
      "die",
      "echo",
      "exit",
      "include",
      "include_once",
      "print",
      "require",
      "require_once",
      // These are not language construct (function) but operate on the currently-executing function and can access the current symbol table
      // 'compact extract func_get_arg func_get_args func_num_args get_called_class get_parent_class ' +
      // Other keywords:
      // <https://www.php.net/manual/en/reserved.php>
      // <https://www.php.net/manual/en/language.types.type-juggling.php>
      "array",
      "abstract",
      "and",
      "as",
      "binary",
      "bool",
      "boolean",
      "break",
      "callable",
      "case",
      "catch",
      "class",
      "clone",
      "const",
      "continue",
      "declare",
      "default",
      "do",
      "double",
      "else",
      "elseif",
      "empty",
      "enddeclare",
      "endfor",
      "endforeach",
      "endif",
      "endswitch",
      "endwhile",
      "enum",
      "eval",
      "extends",
      "final",
      "finally",
      "float",
      "for",
      "foreach",
      "from",
      "global",
      "goto",
      "if",
      "implements",
      "instanceof",
      "insteadof",
      "int",
      "integer",
      "interface",
      "isset",
      "iterable",
      "list",
      "match|0",
      "mixed",
      "new",
      "never",
      "object",
      "or",
      "private",
      "protected",
      "public",
      "readonly",
      "real",
      "return",
      "string",
      "switch",
      "throw",
      "trait",
      "try",
      "unset",
      "use",
      "var",
      "void",
      "while",
      "xor",
      "yield"
    ];

    const BUILT_INS = [
      // Standard PHP library:
      // <https://www.php.net/manual/en/book.spl.php>
      "Error|0",
      "AppendIterator",
      "ArgumentCountError",
      "ArithmeticError",
      "ArrayIterator",
      "ArrayObject",
      "AssertionError",
      "BadFunctionCallException",
      "BadMethodCallException",
      "CachingIterator",
      "CallbackFilterIterator",
      "CompileError",
      "Countable",
      "DirectoryIterator",
      "DivisionByZeroError",
      "DomainException",
      "EmptyIterator",
      "ErrorException",
      "Exception",
      "FilesystemIterator",
      "FilterIterator",
      "GlobIterator",
      "InfiniteIterator",
      "InvalidArgumentException",
      "IteratorIterator",
      "LengthException",
      "LimitIterator",
      "LogicException",
      "MultipleIterator",
      "NoRewindIterator",
      "OutOfBoundsException",
      "OutOfRangeException",
      "OuterIterator",
      "OverflowException",
      "ParentIterator",
      "ParseError",
      "RangeException",
      "RecursiveArrayIterator",
      "RecursiveCachingIterator",
      "RecursiveCallbackFilterIterator",
      "RecursiveDirectoryIterator",
      "RecursiveFilterIterator",
      "RecursiveIterator",
      "RecursiveIteratorIterator",
      "RecursiveRegexIterator",
      "RecursiveTreeIterator",
      "RegexIterator",
      "RuntimeException",
      "SeekableIterator",
      "SplDoublyLinkedList",
      "SplFileInfo",
      "SplFileObject",
      "SplFixedArray",
      "SplHeap",
      "SplMaxHeap",
      "SplMinHeap",
      "SplObjectStorage",
      "SplObserver",
      "SplPriorityQueue",
      "SplQueue",
      "SplStack",
      "SplSubject",
      "SplTempFileObject",
      "TypeError",
      "UnderflowException",
      "UnexpectedValueException",
      "UnhandledMatchError",
      // Reserved interfaces:
      // <https://www.php.net/manual/en/reserved.interfaces.php>
      "ArrayAccess",
      "BackedEnum",
      "Closure",
      "Fiber",
      "Generator",
      "Iterator",
      "IteratorAggregate",
      "Serializable",
      "Stringable",
      "Throwable",
      "Traversable",
      "UnitEnum",
      "WeakReference",
      "WeakMap",
      // Reserved classes:
      // <https://www.php.net/manual/en/reserved.classes.php>
      "Directory",
      "__PHP_Incomplete_Class",
      "parent",
      "php_user_filter",
      "self",
      "static",
      "stdClass"
    ];

    /** Dual-case keywords
     *
     * ["then","FILE"] =>
     *     ["then", "THEN", "FILE", "file"]
     *
     * @param {string[]} items */
    const dualCase = (items) => {
      /** @type string[] */
      const result = [];
      items.forEach(item => {
        result.push(item);
        if (item.toLowerCase() === item) {
          result.push(item.toUpperCase());
        } else {
          result.push(item.toLowerCase());
        }
      });
      return result;
    };

    const KEYWORDS = {
      keyword: KWS,
      literal: dualCase(LITERALS),
      built_in: BUILT_INS,
    };

    /**
     * @param {string[]} items */
    const normalizeKeywords = (items) => {
      return items.map(item => {
        return item.replace(/\|\d+$/, "");
      });
    };

    const CONSTRUCTOR_CALL = { variants: [
      {
        match: [
          /new/,
          regex.concat(WHITESPACE, "+"),
          // to prevent built ins from being confused as the class constructor call
          regex.concat("(?!", normalizeKeywords(BUILT_INS).join("\\b|"), "\\b)"),
          PASCAL_CASE_CLASS_NAME_RE,
        ],
        scope: {
          1: "keyword",
          4: "title.class",
        },
      }
    ] };

    const CONSTANT_REFERENCE = regex.concat(IDENT_RE, "\\b(?!\\()");

    const LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON = { variants: [
      {
        match: [
          regex.concat(
            /::/,
            regex.lookahead(/(?!class\b)/)
          ),
          CONSTANT_REFERENCE,
        ],
        scope: { 2: "variable.constant", },
      },
      {
        match: [
          /::/,
          /class/,
        ],
        scope: { 2: "variable.language", },
      },
      {
        match: [
          PASCAL_CASE_CLASS_NAME_RE,
          regex.concat(
            /::/,
            regex.lookahead(/(?!class\b)/)
          ),
          CONSTANT_REFERENCE,
        ],
        scope: {
          1: "title.class",
          3: "variable.constant",
        },
      },
      {
        match: [
          PASCAL_CASE_CLASS_NAME_RE,
          regex.concat(
            "::",
            regex.lookahead(/(?!class\b)/)
          ),
        ],
        scope: { 1: "title.class", },
      },
      {
        match: [
          PASCAL_CASE_CLASS_NAME_RE,
          /::/,
          /class/,
        ],
        scope: {
          1: "title.class",
          3: "variable.language",
        },
      }
    ] };

    const NAMED_ARGUMENT = {
      scope: 'attr',
      match: regex.concat(IDENT_RE, regex.lookahead(':'), regex.lookahead(/(?!::)/)),
    };
    const PARAMS_MODE = {
      relevance: 0,
      begin: /\(/,
      end: /\)/,
      keywords: KEYWORDS,
      contains: [
        NAMED_ARGUMENT,
        VARIABLE,
        LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
        hljs.C_BLOCK_COMMENT_MODE,
        STRING,
        NUMBER,
        CONSTRUCTOR_CALL,
      ],
    };
    const FUNCTION_INVOKE = {
      relevance: 0,
      match: [
        /\b/,
        // to prevent keywords from being confused as the function title
        regex.concat("(?!fn\\b|function\\b|", normalizeKeywords(KWS).join("\\b|"), "|", normalizeKeywords(BUILT_INS).join("\\b|"), "\\b)"),
        IDENT_RE,
        regex.concat(WHITESPACE, "*"),
        regex.lookahead(/(?=\()/)
      ],
      scope: { 3: "title.function.invoke", },
      contains: [ PARAMS_MODE ]
    };
    PARAMS_MODE.contains.push(FUNCTION_INVOKE);

    const ATTRIBUTE_CONTAINS = [
      NAMED_ARGUMENT,
      LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
      hljs.C_BLOCK_COMMENT_MODE,
      STRING,
      NUMBER,
      CONSTRUCTOR_CALL,
    ];

    const ATTRIBUTES = {
      begin: regex.concat(/#\[\s*/, PASCAL_CASE_CLASS_NAME_RE),
      beginScope: "meta",
      end: /]/,
      endScope: "meta",
      keywords: {
        literal: LITERALS,
        keyword: [
          'new',
          'array',
        ]
      },
      contains: [
        {
          begin: /\[/,
          end: /]/,
          keywords: {
            literal: LITERALS,
            keyword: [
              'new',
              'array',
            ]
          },
          contains: [
            'self',
            ...ATTRIBUTE_CONTAINS,
          ]
        },
        ...ATTRIBUTE_CONTAINS,
        {
          scope: 'meta',
          match: PASCAL_CASE_CLASS_NAME_RE
        }
      ]
    };

    return {
      case_insensitive: false,
      keywords: KEYWORDS,
      contains: [
        ATTRIBUTES,
        hljs.HASH_COMMENT_MODE,
        hljs.COMMENT('//', '$'),
        hljs.COMMENT(
          '/\\*',
          '\\*/',
          { contains: [
            {
              scope: 'doctag',
              match: '@[A-Za-z]+'
            }
          ] }
        ),
        {
          match: /__halt_compiler\(\);/,
          keywords: '__halt_compiler',
          starts: {
            scope: "comment",
            end: hljs.MATCH_NOTHING_RE,
            contains: [
              {
                match: /\?>/,
                scope: "meta",
                endsParent: true
              }
            ]
          }
        },
        PREPROCESSOR,
        {
          scope: 'variable.language',
          match: /\$this\b/
        },
        VARIABLE,
        FUNCTION_INVOKE,
        LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
        {
          match: [
            /const/,
            /\s/,
            IDENT_RE,
          ],
          scope: {
            1: "keyword",
            3: "variable.constant",
          },
        },
        CONSTRUCTOR_CALL,
        {
          scope: 'function',
          relevance: 0,
          beginKeywords: 'fn function',
          end: /[;{]/,
          excludeEnd: true,
          illegal: '[$%\\[]',
          contains: [
            { beginKeywords: 'use', },
            hljs.UNDERSCORE_TITLE_MODE,
            {
              begin: '=>', // No markup, just a relevance booster
              endsParent: true
            },
            {
              scope: 'params',
              begin: '\\(',
              end: '\\)',
              excludeBegin: true,
              excludeEnd: true,
              keywords: KEYWORDS,
              contains: [
                'self',
                VARIABLE,
                LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
                hljs.C_BLOCK_COMMENT_MODE,
                STRING,
                NUMBER
              ]
            },
          ]
        },
        {
          scope: 'class',
          variants: [
            {
              beginKeywords: "enum",
              illegal: /[($"]/
            },
            {
              beginKeywords: "class interface trait",
              illegal: /[:($"]/
            }
          ],
          relevance: 0,
          end: /\{/,
          excludeEnd: true,
          contains: [
            { beginKeywords: 'extends implements' },
            hljs.UNDERSCORE_TITLE_MODE
          ]
        },
        // both use and namespace still use "old style" rules (vs multi-match)
        // because the namespace name can include `\` and we still want each
        // element to be treated as its own *individual* title
        {
          beginKeywords: 'namespace',
          relevance: 0,
          end: ';',
          illegal: /[.']/,
          contains: [ hljs.inherit(hljs.UNDERSCORE_TITLE_MODE, { scope: "title.class" }) ]
        },
        {
          beginKeywords: 'use',
          relevance: 0,
          end: ';',
          contains: [
            // TODO: title.function vs title.class
            {
              match: /\b(as|const|function)\b/,
              scope: "keyword"
            },
            // TODO: could be title.class or title.function
            hljs.UNDERSCORE_TITLE_MODE
          ]
        },
        STRING,
        NUMBER,
      ]
    };
  }

  return php;

})();
;
export default hljsGrammar;